Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12339597 | Electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Shota Kaneko, Yuichi Kikuchi, Kenji Takashima, Masahiro Kurachi, Kazuhiro Yamauchi +1 more | 2025-06-24 |
| 12259674 | Electroconductive member, process cartridge, and electrophotographic image formation device | Kenji Takashima, Kazuhiro Yamauchi, Yuichi Kikuchi, Takumi Furukawa, Masaki Yamada | 2025-03-25 |
| 11971683 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto, Masahiro Kurachi +3 more | 2024-04-30 |
| 11675282 | Electrophotographic member, process cartridge and electrophotographic apparatus | Sosuke Yamaguchi, Masaki Yamada, Kazuhiro Yamauchi, Taichi Shintou | 2023-06-13 |
| 11640122 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi, Takumi Furukawa +4 more | 2023-05-02 |
| 11397388 | Process for producing an electrophotographic electroconductive member | Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi, Kana Sato +5 more | 2022-07-26 |
| 11385559 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi, Takumi Furukawa +4 more | 2022-07-12 |
| 11347156 | Electro-conductive member for electrophotography, process cartridge for electrophotography, and electrophotographic image forming apparatus | Masahiro Kurachi, Kazuhiro Yamauchi, Kenji Takashima, Yuichi Kikuchi | 2022-05-31 |
| 11175602 | Electroconductive member, process cartridge, and electrophotographic image forming apparatus | Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi, Kana Sato +5 more | 2021-11-16 |
| 11169454 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto, Masahiro Kurachi +3 more | 2021-11-09 |
| 10845724 | Electro-conductive member, process cartridge and image forming apparatus | Yuichi Kikuchi, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi, Takumi Furukawa | 2020-11-24 |
| 10649350 | Electrophotographic member, process cartridge and electrophotographic apparatus | Sosuke Yamaguchi, Masaki Yamada, Kazuhiro Yamauchi, Taichi Shintou | 2020-05-12 |
| 10280148 | Electroconductive member for electrophotography and quaternary ammonium salt | Satoru Yamada, Kazuhiro Yamauchi, Yuichi Kikuchi | 2019-05-07 |
| 10108129 | Member for electrophotography and method of producing the member, process cartridge, and electrophotographic apparatus | Sosuke Yamaguchi, Masaki Yamada, Hideya Arimura, Kazuhiro Yamauchi | 2018-10-23 |
| 10018934 | Electrophotographic member, process cartridge, and electrophotographic apparatus | Masaki Yamada, Sosuke Yamaguchi, Hideya Arimura, Kazuhiro Yamauchi | 2018-07-10 |
| 9977353 | Electrophotographic member, process cartridge and electrophotographic image forming apparatus | Kazuhiro Yamauchi, Masaki Yamada, Sosuke Yamaguchi, Taichi Shintou | 2018-05-22 |
| 9964914 | Electrophotographic member, process cartridge, and electrophotographic apparatus | Hideya Arimura, Masaki Yamada, Sosuke Yamaguchi, Kazuhiro Yamauchi | 2018-05-08 |
| 9958802 | Electroconductive member for electrophotography, process cartridge, and electrophotographic apparatus | Yuichi Kikuchi, Kazuhiro Yamauchi, Norifumi Muranaka, Tetsuo Hino | 2018-05-01 |
| 9934882 | Amine compound and ionic conductive agent, and electroconductive resin composition | Taichi Shintou, Kazuhiro Yamauchi, Takeshi Miyazaki | 2018-04-03 |
| 9897931 | Electroconductive member for electrophotography, process cartridge, and electrophotographic image-forming apparatus | Kazuhiro Yamauchi, Kenichi Yamauchi, Hiroki Masu, Noriko Suzumura | 2018-02-20 |
| 9811009 | Electrophotographic member, process cartridge and electrophotographic apparatus | Masaki Yamada, Sosuke Yamaguchi, Hideya Arimura, Kazuhiro Yamauchi | 2017-11-07 |
| 9740133 | Charging member, process cartridge and electrophotographic image forming apparatus | Kenichi Yamauchi, Kazuhiro Yamauchi, Hiroki Masu, Noriko Suzumura | 2017-08-22 |
| 9665028 | Electrophotographic member, process cartridge and electrophotographic apparatus | Hideya Arimura, Masaki Yamada, Kazuhiro Yamauchi | 2017-05-30 |
| 9651888 | Electroconductive member with a surface layer including a porous body having a continuous open pore | Norifumi Muranaka, Kazuhiro Yamauchi, Yuichi Kikuchi, Koji Otsuka, Masaki Imoto +1 more | 2017-05-16 |
| 9639009 | Electrophotographic member, process cartridge, and electrophotographic apparatus | Sosuke Yamaguchi, Masaki Yamada, Hideya Arimura, Kazuhiro Yamauchi | 2017-05-02 |